4 Rejoice in the Lord always. I will say it again: Rejoice! 5 Let your gentleness be evident to all. The Lord is near. 6 Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. 7 And the peace of God,which transcends all understanding, will guard your hearts and your minds in Christ Jesus. (Paul’s Letter to the Church at Ephesus, Chapter 4, Verses 4-7, New International Version)
Are you facing huge problems, challenges, pain, suffering, etc.? Strike back with praise! Strike back with thanksgiving. Do this from the very time you wake up. This will set the nature of your day. You and not the circumstances will own your heart. This is crucial, urgent, essential. This is the martial art of a grateful heart. Be grateful in spite of what is happening to you.
This is not Pollyanna dither. This is how you free your mind and emotions to fight back, to focus on the objective, and to move forward in spite of overwhelming odds.
On the other hand, if life is just great for you right now, then be especially diligent in thanking God for your situation. This will guard against pride.